[Libguestfs] [nbdkit PATCH 0/2] common/include/checked-overflow: provide fallback

The second patch is the relevant one; the first patch is just a small tweak to an existent ADD_OVERFLOW() invocation in "common/utils/vector.c" -- because we'll need to pass unsigned arguments to ADD_OVERFLOW() (and MUL_OVERFLOW()) going forward. Thanks, Laszlo Laszlo Ersek (2): utils/vector: pass only unsigned arguments to (ADD|MUL)_OVERFLOW common/include/checked-overflow: provide fallback common/include/checked-overflow.h | 160 ++++++++++++++++++++++-- common/utils/Makefile.am | 8 +- common/utils/test-checked-overflow.c | 177 +++++++++++++++++++++++++++ common/utils/vector.c | 2 +- configure.ac | 6 + 5 files changed, 338 insertions(+), 15 deletions(-) create mode 100644 common/utils/test-checked-overflow.c base-commit: b9a2c12da886decf662f4e2bbcd1699a200676aa -- 2.19.1.3.g30247aa5d201